Belle II 中的 Kink 探测器
高能物理 - 实验
2026-03-16 v2 仪器与探测器
摘要
我们提出了一种用于 Belle II 实验的轨迹寻找算法，专门针对所谓的“kink”——即带电粒子在探测器材料中发生衰变或散射的信号，导致粒子飞行方向发生突然且显著的改变。我们的基准研究表明，Kink 探测器对此类信号的重建效率约为 40%，而标准 Belle II 轨迹寻找算法的效率仅为约 11%。我们的研究还表明，Kink 探测器显著改善了次级轨迹参数的分辨率，抑制了克隆轨迹的数量，并降低了对Kaiser和中子的PID误认率。
引用
@article{arxiv.2511.14171,
title = {Kink Finder at Belle II},
author = {Denis Bodrov and Xinping Xu and Dmitrii Gavrilov and Pavel Pakhlov and Valerio Bertacchi and Tadeas Bilka and Arkodip Biswas and Giulia Casarosa and Priyanka Cheema and Luigi Corona and Giacomo De Pietro and Thanh V. Dong and Patrick Ecker and Torben Ferber and Romulus Godang and Alexander Heidelbach and Tommy Lam and Martina Laurenza and Thomas Lueck and Ludovico Massaccesi and Frank Meier and Lea Reuter and Bianca Scavino and Karin Schoenning and Justin Skorupa and Stefano Spataro and Tien Manh Tran and Vidya Vobbilisetti and Christian Wessel and Jaroslaw Wiechczynski},
journal= {arXiv preprint arXiv:2511.14171},
year = {2026}
}
备注
9 pages, 6 figures, published in Nuclear Instruments and Methods in Physics Research Section A